Add isSingleComponent bool to getConstantColorComponent

src/gpu/GrPaint.cpp

 
 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrPaint.h"
 
@@ skipping 36 matching lines @@
     return false;
 }
 
 bool GrPaint::getOpaqueAndKnownColor(GrColor* solidColor,
                                      uint32_t* solidColorKnownComponents) const {
 
     // TODO: Share this implementation with GrDrawState
 
     GrColor coverage = GrColorPackRGBA(fCoverage, fCoverage, fCoverage, fCoverage);
     uint32_t coverageComps = kRGBA_GrColorComponentFlags;
+    bool isSingleComponent = false;
     int count = fCoverageStages.count();
     for (int i = 0; i < count; ++i) {
-        fCoverageStages[i].getProcessor()->getConstantColorComponents(&coverage, &coverageComps);
+        fCoverageStages[i].getProcessor()->getConstantColorComponents(&coverage, &coverageComps,
+                                                                      &isSingleComponent);
     }
     if (kRGBA_GrColorComponentFlags != coverageComps || 0xffffffff != coverage) {
         return false;
     }
 
     GrColor color = fColor;
     uint32_t colorComps = kRGBA_GrColorComponentFlags;
+    isSingleComponent = false;
     count = fColorStages.count();
     for (int i = 0; i < count; ++i) {
-        fColorStages[i].getProcessor()->getConstantColorComponents(&color, &colorComps);
+        fColorStages[i].getProcessor()->getConstantColorComponents(&color, &colorComps,
+                                                                   &isSingleComponent);
     }
 
     SkASSERT((NULL == solidColor) == (NULL == solidColorKnownComponents));
 
     GrBlendCoeff srcCoeff = fSrcBlendCoeff;
     GrBlendCoeff dstCoeff = fDstBlendCoeff;
     GrSimplifyBlend(&srcCoeff, &dstCoeff, color, colorComps, 0, 0, 0);
 
     bool opaque = kZero_GrBlendCoeff == dstCoeff && !GrBlendCoeffRefsDst(srcCoeff);
     if (solidColor) {
@@ skipping 30 matching lines @@
                 case kIConstA_GrBlendCoeff:
                     *solidColorKnownComponents = 0;
                     break;
             }
         } else {
             solidColorKnownComponents = 0;
         }
     }
     return opaque;
 }